CN209515959U - A kind of dielectric waveguide filter - Google Patents
A kind of dielectric waveguide filter Download PDFInfo
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- CN209515959U CN209515959U CN201920629147.5U CN201920629147U CN209515959U CN 209515959 U CN209515959 U CN 209515959U CN 201920629147 U CN201920629147 U CN 201920629147U CN 209515959 U CN209515959 U CN 209515959U
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- resonant cavity
- coupling window
- dielectric waveguide
- waveguide filter
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Abstract
The utility model relates to a kind of dielectric waveguide filter, including the first resonant cavity, the second resonant cavity and third resonant cavity, second resonant cavity and third resonant cavity are connected with each other, and the upper end of second resonant cavity and third resonant cavity is arranged in first resonant cavity；It is respectively arranged with first between first resonant cavity and second resonant cavity, third resonant cavity and couples window, cross-coupling window, the second coupling window is provided between second resonant cavity and third resonant cavity.The utility model may be implemented in two transmission zeros of generation between the first resonant cavity, the second resonant cavity and third resonant cavity, to can meet the quantitative requirement of the transmission zero of filter when designing more complex filter.
Description
[technical field]
The utility model relates to technology for radio frequency fields, more particularly, to a kind of dielectric waveguide filter.
[background technique]
It is higher and higher to small product size, weight demands with filter industry development.Dielectric waveguide filter can be substantially
The problem of reducing product size, and have the advantages that high q-factor, high isolation, easy processing, filter miniaturization can be well solved.
First three resonant cavity of current dielectric waveguide filter i.e. the first resonant cavity, the second resonant cavity and third resonance
1 transmission zero can only be generated between chamber, transmission zero quantity is often inadequate when designing more complex filter, can only pass through increase
Filter order supplements the inadequate problem of transmission zero, and the weight that will lead to product in this way increases.
[utility model content]
The purpose of the utility model is to overcome the deficiencies of above-mentioned technology, provide a kind of dielectric waveguide filter, Ke Yi
Two transmission zeros are generated between first three resonant cavity i.e. the first resonant cavity, the second resonant cavity and third resonant cavity.
A kind of dielectric waveguide filter provided by the utility model, including the first resonant cavity, the second resonant cavity and third are humorous
Shake chamber, and second resonant cavity and third resonant cavity are connected with each other, the first resonant cavity setting in second resonant cavity and
The upper end of third resonant cavity；First is respectively arranged between first resonant cavity and second resonant cavity, third resonant cavity
Window, cross-coupling window are coupled, the second coupling window is provided between second resonant cavity and third resonant cavity.
Further, second resonant cavity and third resonant cavity are welded to connect or are integrally formed.
Further, first resonant cavity is welded on the upper end of second resonant cavity and third resonant cavity.
Further, the first coupling window and cross-coupling window are all a rectangular medium block, the medium block
Extending direction it is identical as the width extending direction of first resonant cavity.
Further, the first coupling window and cross-coupling window are located at the two of the second coupling window
Side, and be in be oppositely arranged.
Further, size and the cross-coupling window of the first coupling window is equal in magnitude.
Further, the second coupling window is that leading between second resonant cavity and third resonant cavity is arranged in
Hole, the first coupling window and cross-coupling window are located at the two sides of the through-hole.
Further, the outer surface of first resonant cavity, the second resonant cavity and third resonant cavity is all covered with metal layer.
Further, the metal layer is silver layer or layers of copper.
Further, the dielectric waveguide filter further includes the 4th resonant cavity for being connected to the third resonant cavity,
Five resonant cavities and the 6th resonant cavity, the 5th resonant cavity and the 6th resonant cavity are connected with each other, and the 5th resonant cavity and the 6th humorous
The upper end of the third resonant cavity and the 4th resonant cavity is arranged in vibration chamber, and the 6th resonant cavity is close to first resonant cavity.
The utility model, which may be implemented between the first resonant cavity, the second resonant cavity and third resonant cavity, generates two transmission zero
Point not will increase the weight of product to can meet the quantitative requirement of the transmission zero of filter when designing more complex filter
Amount, while meeting filter Out-of-band rejection index.
[Detailed description of the invention]
Fig. 1 is a kind of structural schematic diagram for dielectric waveguide filter that an embodiment of the present invention provides；
Fig. 2 is the decomposition diagram of dielectric waveguide filter shown in Fig. 1；
Fig. 3 is the decomposition diagram of another angle of dielectric waveguide filter shown in Fig. 1.
[specific embodiment]
The utility model will be further described with reference to the accompanying drawings and examples.
Referring to figs. 1 to Fig. 3, a kind of dielectric waveguide filter provided by the utility model, including the first resonant cavity 10, second
Resonant cavity 20 and third resonant cavity 30.First resonant cavity 10, the second resonant cavity 20 and third resonant cavity 30 are solid ceramics
Dielectric cavity, and the shape of three is rectangular.The width of first resonant cavity 10, the second resonant cavity 20 and third resonant cavity 30 is mutual
It is equal.
Second resonant cavity 20 and third resonant cavity 30 are connected with each other, and the setting of the first resonant cavity 10 is in the second resonant cavity 20 and the
The upper end of three resonant cavities 30.The upper end of first resonant cavity 10 has input coupling hole 11, is equipped with input on input coupling hole 11
Connector 12 is for being electrically connected with other electronic equipments with input signal.Input coupling hole 11 is through-hole, it is possible to understand that ground, input
Coupling aperture 11 is also possible to blind hole.
Be respectively arranged between first resonant cavity 10 and the second resonant cavity 20, third resonant cavity 30 first couple window 40,
Cross-coupling window 41, thus pass through the first coupling between the first resonant cavity 10 and the second resonant cavity 20, third resonant cavity 30 respectively
Window 40,41 coupled signal of cross-coupling window are closed, is provided with the second coupling between the second resonant cavity 20 and third resonant cavity 30
Window 42, thus pass through the second coupling 42 coupled signal of window between the second resonant cavity 20 and third resonant cavity 30.Pass through this kind
The filter of structure, the utility model can generate between the first resonant cavity 10, the second resonant cavity 20 and third resonant cavity 30
Two transmission zeros, so that the quantitative requirement of the transmission zero of filter, Bu Huizeng can be met when designing more complex filter
Add the weight of product, while meeting filter Out-of-band rejection index.
In the present embodiment, the outer surface of the first resonant cavity 10, the second resonant cavity 20 and third resonant cavity 30 is all covered with gold
Belong to layer.Metal layer is silver layer, it is possible to understand that ground, metal layer can also be other metal layers such as layers of copper.
Second resonant cavity 20 and third resonant cavity 30 are welded to connect, and the first resonant cavity 10 is welded on the second resonant cavity 20 and the
The upper end of three resonant cavities 30.It is to be appreciated that the second resonant cavity 20 and third resonant cavity 30 can also be integrally formed, convenient for system
It makes.
Preferably, the first coupling window 40 and cross-coupling window 41 are all a rectangular medium block, the extension of medium block
Direction is identical as the width extending direction of the first resonant cavity 10.First coupling window 40 and cross-coupling window 41 are located at the
The two sides of two coupling windows 42, and be in be oppositely arranged.The size and the size phase of cross-coupling window 41 of first coupling window 40
Deng.It is to be appreciated that position and intensity by adjusting adjustable two zero points of size of cross-coupling window 41.
Preferably, the second coupling window 42 is the through-hole being arranged between the second resonant cavity 20 and third resonant cavity 30.It is logical
It is biased to the side of the second resonant cavity 20 and third resonant cavity 30 in hole.
In the present embodiment, dielectric waveguide filter further includes the 4th resonant cavity the 50, the 5th for being connected to third resonant cavity 30
Resonant cavity 60 and the 6th resonant cavity 70.Thus the dielectric waveguide filter of the utility model is six rank filters.Second resonant cavity
20 and the 4th resonant cavity 50 be located at the both ends of third resonant cavity 30.5th resonant cavity 60 is mutually interconnected with the 6th resonant cavity 70
It connects, and the upper end of third resonant cavity 30 and the 4th resonant cavity 50 is arranged in the 5th resonant cavity 60 and the 6th resonant cavity 70, the 6th is humorous
Chamber 70 shake close to the first resonant cavity 10.
It is equipped with third between third resonant cavity 30 and the 4th resonant cavity 50 and couples window 80, thus third resonant cavity 30 and the
80 coupled signal of window is coupled by third between four resonant cavities 50.It is to be arranged in 30 He of third resonant cavity that third, which couples window 80,
Through-hole between 4th resonant cavity 50.
4th resonant cavity 50 and the 4th coupling window 81, thus 50 He of the 4th resonant cavity are equipped between the 5th resonant cavity 60
Pass through the 4th coupling 81 coupled signal of window between 5th resonant cavity 60.4th coupling window 81 is to be arranged in the 4th resonant cavity 50
And the 5th rectangular medium block between resonant cavity 60.
The 5th coupling window 82, thus the 5th resonant cavity 60 and the are equipped between 5th resonant cavity 60 and the 6th resonant cavity 70
Pass through the 5th coupling 82 coupled signal of window between six resonant cavities 70.5th coupling window 82 is to be arranged in 60 He of the 5th resonant cavity
Through-hole between 6th resonant cavity 70.
The upper end of 6th resonant cavity 70 has output coupling hole 71, and the use of out connector 72 is equipped on output coupling hole 71
It connect in other electronic equipments with output signal.Output coupling hole 71 is through-hole, it is possible to understand that ground, output coupling hole 71 can also
To be blind hole.Also cross-coupling window 83, thus the 6th resonance can be set between 6th resonant cavity 70 and the 4th resonant cavity 50
Also by 83 coupled signal of cross-coupling window between chamber 70 and the 4th resonant cavity 50.Cross-coupling window 83 is to be arranged the 6th
Rectangular medium block between resonant cavity 70 and the 4th resonant cavity 50.Cross-coupling window 83 is two.
By this kind of structure, the dielectric waveguide filter of the utility model also may be implemented to generate between rear three resonant cavities
Two transmission zeros, further satisfaction filter zero point quantitative requirement.
Preferably, the 4th resonant cavity 50 is welded to connect with third resonant cavity 30.5th resonant cavity 60 and the 6th resonant cavity 70
It is welded to connect.5th resonant cavity 60 and the 6th resonant cavity 70 are welded on the upper end of third resonant cavity 30 and the 4th resonant cavity 50.It can
To understand that ground, the 4th resonant cavity 50 are also possible to be integrally formed with third resonant cavity 30, the 5th resonant cavity 60 and the 6th resonant cavity
70 are also possible to be integrally formed, convenient for manufacture.
First resonant cavity 10, the second resonant cavity 20, third resonant cavity 30, the 4th resonant cavity 50, the 5th resonant cavity the 60, the 6th
The width of resonant cavity 70 is equal each other.
Above embodiments only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Therefore it cannot be interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, such as to each implementation
Different characteristic in example is combined, and these are all within the protection scope of the present invention.
Claims (10)
1. a kind of dielectric waveguide filter, including the first resonant cavity, the second resonant cavity and third resonant cavity, it is characterised in that: institute
It states the second resonant cavity and third resonant cavity is connected with each other, first resonant cavity is arranged in second resonant cavity and third resonance
The upper end of chamber；Be respectively arranged between first resonant cavity and second resonant cavity, third resonant cavity first couple window,
Cross-coupling window is provided with the second coupling window between second resonant cavity and third resonant cavity.
2. dielectric waveguide filter according to claim 1, it is characterised in that: second resonant cavity and third resonant cavity
It is welded to connect or is integrally formed.
3. dielectric waveguide filter according to claim 1, it is characterised in that: first resonant cavity is welded on described
The upper end of two resonant cavities and third resonant cavity.
4. dielectric waveguide filter according to claim 1, it is characterised in that: the first coupling window and cross-coupling
Window is all a rectangular medium block, the width extending direction phase of the extending direction of the medium block and first resonant cavity
Together.
5. dielectric waveguide filter according to claim 1, it is characterised in that: the first coupling window and cross-coupling
Window is located at the two sides of the second coupling window, and is in be oppositely arranged.
6. dielectric waveguide filter according to claim 1, it is characterised in that: the size of the first coupling window and institute
State the equal in magnitude of cross-coupling window.
7. dielectric waveguide filter according to claim 1, it is characterised in that: the second coupling window is setting in institute
The through-hole between the second resonant cavity and third resonant cavity is stated, the first coupling window and cross-coupling window are located at described
The two sides of through-hole.
8. dielectric waveguide filter according to claim 1, it is characterised in that: first resonant cavity, the second resonant cavity
Metal layer is all covered with the outer surface of third resonant cavity.
9. dielectric waveguide filter according to claim 8, it is characterised in that: the metal layer is silver layer or layers of copper.
10. dielectric waveguide filter according to claim 1, it is characterised in that: the dielectric waveguide filter further includes
It is connected to the 4th resonant cavity, the 5th resonant cavity and the 6th resonant cavity of the third resonant cavity, the 5th resonant cavity and the 6th
Resonant cavity is connected with each other, and the upper of the third resonant cavity and the 4th resonant cavity is arranged in the 5th resonant cavity and the 6th resonant cavity
End, the 6th resonant cavity is close to first resonant cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920629147.5U CN209515959U (en) | 2019-05-05 | 2019-05-05 | A kind of dielectric waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920629147.5U CN209515959U (en) | 2019-05-05 | 2019-05-05 | A kind of dielectric waveguide filter |
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| Publication Number | Publication Date |
|---|---|
| CN209515959U true CN209515959U (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920629147.5U Active CN209515959U (en) | 2019-05-05 | 2019-05-05 | A kind of dielectric waveguide filter |
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| CN (1) | CN209515959U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952703A (en) * | 2020-08-11 | 2020-11-17 | 西安烽矩电子科技有限公司 | Dielectric waveguide filter |
| CN112467323A (en) * | 2020-11-27 | 2021-03-09 | 南宁国人射频通信有限公司 | Air suspension line dual-mode filter |
| CN112736398A (en) * | 2021-01-05 | 2021-04-30 | 绵阳领益通信技术有限公司 | Dielectric filter and preparation method thereof |
-
2019
- 2019-05-05 CN CN201920629147.5U patent/CN209515959U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952703A (en) * | 2020-08-11 | 2020-11-17 | 西安烽矩电子科技有限公司 | Dielectric waveguide filter |
| CN112467323A (en) * | 2020-11-27 | 2021-03-09 | 南宁国人射频通信有限公司 | Air suspension line dual-mode filter |
| CN112736398A (en) * | 2021-01-05 | 2021-04-30 | 绵阳领益通信技术有限公司 | Dielectric filter and preparation method thereof |
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Address after: 518000 5th floor, building 1, Guoren science and Technology Park, the intersection of Jinxiu middle road and Cuijing Road, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Guoren Technology Co., Ltd Address before: 518000 7F, B 7F, China Science and technology three road, central high tech Zone, Shenzhen, Guangdong Patentee before: Shenzhen GrenTech Corporation |
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